# d+f vs Calculator

The clearest difference is in-app purchases: d+f at none against Calculator's 4. d+f also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Calculator sells 4 in-app purchases, starting at $2.49 per month. d+f asks for nothing beyond the download.

d+f ships an update weekly, Calculator every 2 months. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | d+f | Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (200 ratings)](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072/reviews)** |
| Number of ratings | — | **200** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | — | Freemium |
| Size | 27 MB | 36 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GISELA](https://appshunter.io/developer/1328336126) | [Wuhan Ananta Technology Co., Ltd.](https://appshunter.io/developer/1508854889) |

## What reviewers say

### d+f

[App page](https://appshunter.io/ios/app/d-plus-f/id1328336127)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Calculator

[App page](https://appshunter.io/ios/app/calculator-basic-and-scientific/id1521827072)

This app combines basic, scientific, currency, and unit conversion tools into a single, powerful calculator. It offers features like history records, number speech, and seamless result inheritance across different calculator types for an efficient workflow.

**Highlights:** Basic and scientific calculations, Currency converter with 150+ currencies, Units converter for various measurements, History records with save, copy, and paste, Number speech for input accuracy, Seamless result inheritance across calculators, Offline usage and customizable themes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership - 1 Month | $2.49 | per month |
| Premium Monthly Pro | $2.49 | per month |
| Premium Membership - 1 Week | $2.49 | per 7 days |
| Premium Membership - 1 Year | $26.99 | per year |


## Frequently asked questions

### Is d+f free?

d+f is free to download, with no in-app purchases.

### Is Calculator free?

Calculator is free to download, with in-app purchases available.

### Do d+f or Calculator have ads?

Calculator shows ads; d+f does not.

### Which is updated more often, d+f or Calculator?

d+f ships an update weekly, and Calculator every 2 months. Most recently, d+f was updated on October 5, 2026 and Calculator on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*